Islamist al Shabaab rebels have claimed responsibility for a bomb that killed six people outside a popular Mogadishu hotel on Friday, and said they deliberately targetted government officials and security forces.

A bomb planted inside a mosque microphone killed the governor of Afghanistan's eastern Logar province as he was delivering a speech to worshippers on this morning to mark the Muslim holiday of Eid al-Adha, officials said.

Israeli Prime Minister Benjamin Netanyahu has warned it would be an “historic mistake” if Tuesday’s much-awaited talks in Geneva between Iran and world powers led to an easing of sanctions on Tehran. He also urged the international community to reject Iran’s offer to limit uranium enrichment to 20 per cent.